340 CE
Constantine II, emperor of the western part of the Roman Empire (Britain, Gaul, the Rhine provinces and Iberia), crosses the Alps and attacks the army of his brother Constans I, emperor of the central part of the Roman Empire (Upper Danube, Italy and middle Africa). They clash at Aquileia in northern Italy. Constantine is killed in a skirmish by an ambush of Constans' troops. Wulfila evangelizes among the Goths for 7 years. Acacius succeeds Eusebius as bishop in the see of Caesarea.
Conflict & Security
- Constantine II, emperor of the western part of the Roman Empire (Britain, Gaul, the Rhine provinces and Iberia), crosses the Alps and attacks the army of his brother Constans I, emperor of the central part of the Roman Empire (Upper Danube, Italy and middle Africa). They clash at Aquileia in northern Italy. Constantine is killed in a skirmish by an ambush of Constans' troops.source
- Constantinople, capital of Emperor Constantius II, becomes the largest city in the world, taking the lead from Rome, capital of his brother Constans I.source
- Constans is left sole ruler of the Western part of the Roman Empire, with his other brother, Constantius II, emperor of the Eastern portion.source
Religion & Belief
Births
- Peter of Sebaste, bishop of Armenia (approximate date)source
- Quintus Aurelius Symmachus, Roman consul (d. 402)source
- Justina, Roman empress and regent (approximate date)source
- Jerome, priest and Bible translator (approximate date)source
- Amphilochius, bishop of Iconium (approximate date)source
- Aurelius Ambrose, bishop of Milan (approximate date)source
Deaths
- October 28 – Cunera (or Kunera), Christian martyrsource
- Kui An, Indian general and minister of Later Zhaosource
- Tao Bao (or Anbu), Chinese general of Later Zhaosource
- Macrina the Elder, Christian saint (approximate date)source
- Yu Liang (or Yuangui), Chinese general (b. 279)source
- Constantine II, Roman consul and emperor (b. 316)source